Improve naming of mimimum RSA key size generation configurations

Signed-off-by: Waleed Elmelegy <waleed.elmelegy@arm.com>
diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index 4e1f41b..1eb6960 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -7374,7 +7374,7 @@
         if (bits > PSA_VENDOR_RSA_MAX_KEY_BITS) {
             return PSA_ERROR_NOT_SUPPORTED;
         }
-        if (bits < PSA_VENDOR_RSA_MIN_KEY_BITS) {
+        if (bits < PSA_VENDOR_RSA_GENERATE_MIN_KEY_BITS) {
             return PSA_ERROR_NOT_SUPPORTED;
         }